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EP0819036A1 - Procede et dispositif d'usinage au laser de surfaces en 3d quelconques - Google Patents

Procede et dispositif d'usinage au laser de surfaces en 3d quelconques

Info

Publication number
EP0819036A1
EP0819036A1 EP96909025A EP96909025A EP0819036A1 EP 0819036 A1 EP0819036 A1 EP 0819036A1 EP 96909025 A EP96909025 A EP 96909025A EP 96909025 A EP96909025 A EP 96909025A EP 0819036 A1 EP0819036 A1 EP 0819036A1
Authority
EP
European Patent Office
Prior art keywords
laser
partial
sealing surfaces
laser beam
processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96909025A
Other languages
German (de)
English (en)
Other versions
EP0819036B1 (fr
Inventor
Alexander Bestenlehrer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LFC LASER FINISHING CENTER AG
Original Assignee
Polierwerkstatt fur Stahlformen Bestenlehrer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polierwerkstatt fur Stahlformen Bestenlehrer GmbH filed Critical Polierwerkstatt fur Stahlformen Bestenlehrer GmbH
Priority to EP98103286A priority Critical patent/EP0854004B1/fr
Publication of EP0819036A1 publication Critical patent/EP0819036A1/fr
Application granted granted Critical
Publication of EP0819036B1 publication Critical patent/EP0819036B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/42—Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine
    • G05B19/4202—Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine preparation of the programme medium using a drawing, a model
    • G05B19/4207—Recording and playback systems, i.e. in which the programme is recorded from a cycle of operations, e.g. the cycle of operations being manually controlled, after which this record is played back on the same machine preparation of the programme medium using a drawing, a model in which a model is traced or scanned and corresponding data recorded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/10—Devices involving relative movement between laser beam and workpiece using a fixed support, i.e. involving moving the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/355—Texturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/3568—Modifying rugosity
    • B23K26/3576—Diminishing rugosity, e.g. grinding; Polishing; Smoothing
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4097—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by using design data to control NC machines, e.g. CAD/CAM
    • G05B19/4099—Surface or curve machining, making 3D objects, e.g. desktop manufacturing
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35062—Derive mating, complementary, mirror part from computer model data
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45165—Laser machining
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49008—Making 3-D object with model in computer memory
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50063—Probe, measure, verify workpiece, feedback measured values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50071—Store actual surface in memory before machining, compare with reference surface

Definitions

  • the present invention relates to a method and a device for processing, in particular for polishing and structuring any 3D shaped surfaces or free-form surfaces by means of a laser, and the use of this method for producing complementary sealing surfaces on complementary molding tools.
  • DE-OS-42 17 530, DE-OS-39 22 377, EP-A-0 419 999 and US-A-4,825,035 describe methods and devices for hardening highly stressed metallic surfaces, such as, for. B. piston treads known.
  • An automatic welding robot is known from DE-OS 41 06 008, in which the quality of the weld seams is monitored online via optical monitoring of the weld seams or the weld spatter.
  • DE-OS-42 19 809 discloses a method and a device for the controlled removal of layers from a surface by means of a laser. In order to simplify the control or regulation of the removal, it is ensured that successively worked partial areas always have a constant area.
  • the fact that the actual surface shape and structure is first determined using the 3D contour measuring device enables the laser beam to be measured in terms of power, distance from the workpiece, processing speed (speed at which the working beam travels over the surface to be processed), pulse duration, pulse frequency ,
  • processing speed speed at which the working beam travels over the surface to be processed
  • pulse duration pulse frequency
  • pulse frequency pulse frequency
  • the complementary partial sealing surfaces are machined to a constant distance between the complementary partial sealing surfaces. This means that two adjacent, complementary sealing surfaces can be machined or manufactured with just one set of TARGET data.
  • the flat area of the curve is preferably used at low laser fluence, since no removal is desired during laser polishing.
  • the device according to the invention comprises a contour measuring device which records the actual shape of the partial area to be machined immediately before machining allows the machining parameters to be controlled in a targeted and timely manner.
  • FIG. 1 shows a schematic representation of an exemplary embodiment of the laser processing device according to the invention
  • FIG. 6 shows a flow chart to explain a preferred embodiment of the method for producing sealing surfaces according to the present invention
  • ERS ⁇ ZBLA ⁇ T (RULE 26) 9a and 9b imaging optics with large and small Rayleigh length.
  • FIG. 5 schematically shows a molding tool 30 which consists of two complementary parts 32 and 33.
  • FIG. 6 shows a flow chart to explain the manufacture of the sealing surfaces 34 and 36 with the method according to the present invention.
  • a step SI ' the TARGET shape of only one of the two partial sealing surfaces, for example the partial sealing surface 34, is first defined.
  • the processing is then carried out in accordance with steps S2 to S7 according to FIG. 4. If the first partial sealing surface 34 has been completely machined, in a step S8 the actual shape of the first partial sealing surface 34 that is present after processing becomes the TARGET shape for the second partial sealing surface 36 fixed.
  • the processing of the second partial sealing surface 36 is then again carried out analogously to steps S2 to S7 according to FIG. 4.
  • FIG. 7 schematically shows a section through a part of the parts 32 and 33 of the molding tool 30 or a section through a part of the part sealing surfaces 34 and 36, areas 38 and 39 being shown enlarged.
  • the two parts 32 and 33 more precisely their partial sealing surfaces 34 and 36, are arranged at a distance D from one another. Due to the roughness of the pre-machined partial sealing surfaces 34 and 36, the actual distance D j (actual distance) between opposing surface elements of the partial sealing surfaces 34 and 36 varies.
  • the two mold parts 32 and 33 are spatially fixed at a fixed distance from one another and The actual distance Dj between opposing surface elements of the partial sealing surfaces 34 and 36 is measured.
  • the TARGET distance D s is then determined and the two partial sealing surfaces 34 and 36 are machined in this way with the laser.
  • the laser 2 is operated according to the invention in the areas 40 and 42 with a flat curve, since there small fluctuations in fluence, such as occur due to variations in the distance between the laser head 3 and the surface to be processed due to vibrations, hardly affect the size of the Impact material removal. A controlled and precise shaping is consequently simpler.
  • the region 40 with a low laser intensity is particularly advantageous in laser polishing, since a large amount of material is not desired during laser polishing.
  • FIG. 9a shows an optic 12 with a large Rayleig length and FIG. 9b an optic 12 'with a small Rayleigh length. If in both cases the distance between imaging optics 12, 12 'and the surface to be processed varies around the focal point B by ⁇ D, the cross-sectional area F of the radiation beam fluctuates in the range between + ⁇ D and - ⁇ D and thus the laser intensity considerably more than with a large Rayleigh length - FIG. 9a. A laser device 2 with imaging optics 12 with a large Rayleigh length is therefore less sensitive to vibration fluctuations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Manufacturing & Machinery (AREA)
  • Human Computer Interaction (AREA)
  • Laser Beam Processing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
EP96909025A 1995-04-06 1996-04-09 Procede et dispositif d'usinage au laser de surfaces en 3d quelconques Expired - Lifetime EP0819036B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98103286A EP0854004B1 (fr) 1995-04-06 1996-04-09 Procédé de réalisation de surfaces d'étanchéité pour des outils de formage complémentaires

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29505985U 1995-04-06
DE29505985U DE29505985U1 (de) 1995-04-06 1995-04-06 Vorrichtung zum Bearbeiten, insbesondere zum Polieren und Strukturieren von beliebigen 3D-Formflächen mittels eines Laserstrahls
PCT/DE1996/000621 WO1996031315A1 (fr) 1995-04-06 1996-04-09 Procede et dispositif d'usinage au laser de surfaces en 3d quelconques

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP98103286A Division EP0854004B1 (fr) 1995-04-06 1996-04-09 Procédé de réalisation de surfaces d'étanchéité pour des outils de formage complémentaires
EP98103286.5 Division-Into 1998-02-25

Publications (2)

Publication Number Publication Date
EP0819036A1 true EP0819036A1 (fr) 1998-01-21
EP0819036B1 EP0819036B1 (fr) 1999-04-21

Family

ID=8006554

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98103286A Expired - Lifetime EP0854004B1 (fr) 1995-04-06 1996-04-09 Procédé de réalisation de surfaces d'étanchéité pour des outils de formage complémentaires
EP96909025A Expired - Lifetime EP0819036B1 (fr) 1995-04-06 1996-04-09 Procede et dispositif d'usinage au laser de surfaces en 3d quelconques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98103286A Expired - Lifetime EP0854004B1 (fr) 1995-04-06 1996-04-09 Procédé de réalisation de surfaces d'étanchéité pour des outils de formage complémentaires

Country Status (13)

Country Link
US (1) US6043452A (fr)
EP (2) EP0854004B1 (fr)
JP (1) JP3258331B2 (fr)
KR (1) KR100311839B1 (fr)
AT (2) ATE179107T1 (fr)
AU (1) AU5269496A (fr)
BR (1) BR9604851A (fr)
CA (1) CA2217372C (fr)
DE (3) DE29505985U1 (fr)
DK (2) DK0819036T3 (fr)
ES (2) ES2130808T3 (fr)
PT (1) PT854004E (fr)
WO (1) WO1996031315A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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US7592563B2 (en) 2002-06-27 2009-09-22 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method for smoothing and polishing surfaces by treating them with energetic radiation

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JP3258331B2 (ja) 2002-02-18
DK0854004T3 (da) 2002-01-07
EP0854004A1 (fr) 1998-07-22
ATE179107T1 (de) 1999-05-15
AU5269496A (en) 1996-10-23
ES2162356T3 (es) 2001-12-16
EP0854004B1 (fr) 2001-10-04
DE59601716D1 (de) 1999-05-27
CA2217372C (fr) 2001-10-02
DE29505985U1 (de) 1995-07-20
PT854004E (pt) 2002-02-28
DE59607842D1 (de) 2001-11-08
EP0819036B1 (fr) 1999-04-21
US6043452A (en) 2000-03-28
ATE206340T1 (de) 2001-10-15
KR100311839B1 (ko) 2002-11-18
BR9604851A (pt) 1999-11-30
ES2130808T3 (es) 1999-07-01
DK0819036T3 (da) 1999-10-25
JPH10508256A (ja) 1998-08-18
KR19980703605A (ko) 1998-12-05
WO1996031315A1 (fr) 1996-10-10
CA2217372A1 (fr) 1996-10-10

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